Over the past few years, Google, Yahoo, and other major email providers have made significant changes to their email security requirements. Today, authenticating domains with DMARC, DKIM, SPF, and MTA-STS is either a recommendation or a requirement across various industries and countries.
Such a drastic change in the approach of major email providers, government agencies, and regulatory bodies is a stark reflection of a global effort towards strengthening email security. The aim is to enhance email deliverability, lower spam rates, and reduce email-based cyber attacks that can cause major data breaches and reputational damage.
With these fast-evolving requirements, DMARC is likely to become an integral component of mandatory cybersecurity strategies worldwide soon.
Key DMARC Requirements in 2025
Global DMARC Requirements
- Google and Yahoo Bulk Sender Requirements
Bulk senders (over 5,000 emails/day) must authenticate domains with TLS, DKIM, and SPF, and have a DMARC policy of at least p=none. The requirements were originally put into effect from February 2024.
- Google & Yahoo General Sender Requirements
General email senders are also expected to implement either SPF or DKIM to authenticate legitimate emails and prevent high spam rates and impersonation.
- PCI-DSS Version 4 Compliance Requirements
PCI DSS v4.0 requires automated mechanisms to prevent phishing; best practices suggest using DMARC, SPF, and DKIM.
Regional DMARC Requirements
| Region | Requirement Name | Requirement Description | Source Link |
|---|---|---|---|
| EU countries | GDPR (General Data Protection Regulation) | Under GDPR, you are required to have Data Processing Agreements (DPAs) with every single cloud service provider that, on behalf of your entity, handles the European consumers’ data. | Read more |
| EU countries | DORA (Digital Operational Resilience Act) | By applying to 20 different types of financial entities and ICT third-party service providers, the Digital Operational Resilience Act (DORA) aims to harmonize the rules regarding the operational resilience of the financial sector (i.e. banks, insurance companies, investment firms, etc.). DMARC can be of significant importance for financial institutions, as it offers protection from email-based cyber attacks, indirectly helping ensure compliance with the DORA Act. | Read more |
| Canada | Email Management Services Configuration Requirements | Government emails must be verified using SPF, DKIM, and DMARC. | Read more |
| Denmark | Minimum technical requirements for government authorities | Government agencies must implement a DMARC policy of p=reject on all domains. | Read more |
| New Zealand | New Zealand Information Security Manual version 3.6 | Change of DMARC and DKIM control compliance from SHOULD to MUST and DMARC policy setting from p="none" to p="reject". | Read more |
| Ireland | Public Sector Cyber Security Baseline Standards | The Public Sector Cyber Security Baselines suggest using SPF, DKIM, DMARC, and TLS to enhance email security. However, this is only a suggestion and not a requirement. | Read more |
| Netherlands | “Comply or Explain” standards | It is a requirement for government agencies to implement DMARC, along with DKIM, SPF, STARTTLS, and DANE. This is part of the “Comply or Explain” standards for email protection and authentication. | Read more |
| Saudi Arabia | Guide to Essential Cybersecurity Controls (ECC) Implementation | Saudi Arabian organizations are recommended to use DKIM, SPF, and DMARC as advanced phishing protection techniques to filter out fraudulent messages. | Read more |
| UK | Government Cybersecurity Policy Handbook Principle | In March 2024, the Government Cyber Security Policy replaced the Minimum Cyber Security Policy. This update moved MTA-STS and TLS-RPT from ‘recommended’ to ‘must do’ and added a reference to PTR records. | Read more |
| United States | Binding Operational Directive 18-01 | The binding Operational Directive 18-01 requires all federal agencies to use STARTTLS, SPF, DKIM, and a DMARC policy of p=reject. | Read more |
| United States | HIPAA (Health Insurance Portability and Accountability Act) | Under the Health Insurance Portability and Accountability Act of 1996 (HIPAA), the HIPAA Privacy Rule determines national standards for safeguarding certain sensitive health-related information. DMARC can be an essential tool in ensuring compliance with HIPAA regulations. | Read more |
| Australia | Information Security Manual by the ASD (Australian Signals Directorate) | Recommends using SPF, DKIM, and DMARC to keep email-based threats at bay. | Read more |
| Australia | Information Security Manual by the ASD (Australian Signals Directorate) | Recommends using SPF, DKIM, and DMARC to keep email-based threats at bay. | Read more |
| Australia | How to Combat Fake Emails | Outlines recommendations for security professionals and email server operators on implementing email authentication protocols like SPF, DKIM, and DMARC to minimize spoofing. | Read more |
| Australia | Strategies to Mitigate Cyber Security Incidents | Details of cyber risk mitigation strategies by the Australian Signals Directorate (ASD). | Read more |
| Belgium | Ransomware Protection and Prevention with DMARC, SPF, and DKIM | Guidance provided by the Centre for Cyber Security Belgium. | Read more |
| Czech Republic | The Act on Cyber Security – Implementation Guidance | Domains sending electronic mail must have a DMARC record in place, adhering to specific parameters mentioned under RFC 7489. | Read more |
| Finland | How to Protect Your Microsoft 365 Services | The National Cyber Security Centre, Finnish Transport and Communications Agency Traficom, outlines protective strategies for Exchange Online servers. | Read more |
| France | Guideline For a Healthy Information System | Suggestions on implementing authentication mechanisms and properly configuring public DNS records related to email infrastructure (MX, SPF, DKIM, DMARC). | Read more |
| France | Cyber Threat Overview 2021 | An overview of cyber threats and possible mitigation techniques published by Agence Nationale De La Sécurité des Systèmes D’Information. | Read more |
| Germany | Recommendations for Action for Internet Service Providers | BSI publications on cybersecurity, which include email security and authentication. | Read more |
| India | Cyber Security Framework in Banks | The Reserve Bank of India’s Level I Compliance requires financial institutions to implement appropriate security measures to prevent email threats | Read more |
| Norway | Basic Measures for Email Security | Includes recommendations on implementing DMARC for enhancing email security. | Read more |
| Phillipines | DICT on Cybersecurity Measures Against WannaCry Ransomware | Advises enabling strong spam filters and authenticating inbound email using technologies like SPF, DMARC, and DKIM to prevent email spoofing. | Read more |
| Poland | Act on Combating Abuse in Electronic Communications – New Obligations for Email Providers and Public Institutions | Since September 25, 2023, public entities in Poland are required to implement SPF, DKIM, and DMARC to authenticate email senders and combat spoofing and smishing. | Read more |
| Portugal | Technical Recommendation 01/2019 and 01/2020 | To enhance email security within organizations, it is recommended to implement SPF, DKIM, and DMARC standards. The following four actions: configuring SPF, DKIM, DMARC, and MX records in the domain’s DNS, help notify recipients that emails should not originate from a “parked” domain and should be discarded if they do. These measures should be applied in the specified order for optimal effectiveness. | Read more (2019) Read more (2020) |
| Scotland | Scottish Public Sector Cyber Resilience Framework V1.2 | Recommendation on implementing DMARC alongside DKIM and SPF records, as well as activating spam and malware filtering. Application of enforced DMARC policies to inbound emails is also an extended best practice. | Read more |
| Singapore | Business Email Compromise(BEC) Playbook | The publication outlined that organizations can leverage DMARC to block malicious emails and minimize domain spoofing and phishing attempts from reaching recipient inboxes. | Read more |
Why DMARC Compliance Matters in 2025
The advantages of using DMARC records:
- DMARC safeguards you and your company from email phishing, domain spoofing, email impersonation, and business email compromise (BEC) threats.
- Email sender reputation is improved by DMARC enforcement.
- DMARC gradually raises your email deliverability rate by 10%.
- By implementing DMARC on your domain server, you can ensure that your emails are never marked as spam, which will increase open rates.
Additionally, companies can easily track who is permitted to send business emails from their domain. This enables you to avoid dishonest practices. How? All receiving email servers will verify incoming emails to confirm legitimacy before delivering them to recipients’ inboxes once you publish your domain’s DMARC record into the DNS entry.
Challenges of Meeting 2025 DMARC Requirements
Businesses of all sizes can face several challenges when meeting DMARC requirements in 2025:
1. Complexities of Manual Setup
Implementing protocols like DMARC, SPF, and DKIM can be technically challenging, leading to reluctance and often misconfigurations. However, thanks to modern, automated solutions by DMARC service providers, this issue has been vastly improved. Now businesses of all sizes can choose from a range of providers that suit their needs, avoiding the hassle and complexity involved in manual efforts.
2. Monitoring Roadblocks
Configuring DMARC to meet requirements doesn’t just stop at protocol setup. Your journey just begins there! To get the best possible results out of your DMARC implementation, you need to monitor your outcomes through reports. While DMARC raw reports can be hard to decipher, a DMARC report analyzer tool makes them human-readable and easy to monitor, while providing actionable insights!
3. Managing Third-Party Senders
It’s important to identify all third-party services sending emails on behalf of the domain. You need to ensure these services properly authenticate emails with aligned DKIM signatures. While manually doing this can be challenging, managed DMARC services can make a huge difference.
4. Email Deliverability concerns
Moving from a DMARC policy of p=none to p=reject requires careful monitoring. Organizations often fear blocking legitimate emails. To ensure consistent deliverability, gradually enforcing DMARC while monitoring your email channels through reports is the recommended practice.
5. Lack of Expertise
Many IT teams lack in-depth knowledge of DMARC, SPF, and DKIM. Organizations can encourage their employees to opt for free DMARC training courses to build up their knowledge. Alternatively, outsourcing to a DMARC management provider with a panel of experts reduces the time and effort involved in training and upskilling existing employees.
How PowerDMARC Helps with 2025 Compliance
PowerDMARC is a one-stop email authentication platform for meeting DMARC requirements. PowerDMARC provides:
- Automated compliance monitoring for changing DMARC regulations.
- Guides Policy enforcement to move safely from p=none to p=reject.
- Real-time threat intelligence to detect phishing attempts before they happen.
- Trusted by Fortune 100 organizations & MSPs in 90+ countries.
- Comprehensive SPF & DKIM alignment to ensure third-party senders are properly authenticated.
- Advanced reporting & analytics to gain full visibility into email authentication failures with detailed DMARC reports.
- BIMI & MTA-STS support to strengthen brand trust and email security with additional authentication layers.
- Automated SPF optimization to help prevent SPF lookup failures with SPF Macros.
Final Words
2025 marks a turning point for DMARC enforcement, and organizations must act now to avoid email disruptions and security risks. With stricter policies from major email providers, ensuring compliance is no longer optional. Is your domain DMARC-compliant? Check your compliance status today and take the necessary steps to protect your email channels.
Don’t wait until it’s too late! To get started, contact PowerDMARC today to take a free DMARC trial and ensure full compliance with 2025 DMARC requirements!
